Journal
BIORESOURCE TECHNOLOGY
Volume 281, Issue -, Pages 179-187Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2019.02.091
Keywords
Adsorption kinetics; Adsorption isotherms; Competitive adsorption; Magnetic biochar; Reusability
Funding
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [NRF-2018R1A6A1A03024962, NRF-2018R1D1A1B07040341]
- Korea Ministry of Environment [2018002470005]
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The widespread occurrence of endocrine-disrupting compound and pharmaceutical active compounds such as bisphenol A (BPA) and sulfamethoxazole (SMX) in natural freshwater resources can cause serious environmental problems even at low exposure levels. In this work, in order to remove BPA and SMX from aqueous solutions, a novel biochar-supported magnetic CuZnFe2O4 composite (CZF-biochar) was synthesized by a facile one-pot hydrothermal process. After characterization studies, the key factors affecting BPA and SMX adsorption on CZF-biochar were comprehensively investigated. The primary mechanisms for BPA and SMX adsorption included charge-assisted H-bonding, hydrophobic, and pi-pi electron donor-acceptor interactions. In summary, considering the fast kinetics, high adsorption properties, easy magnetic separation, and recyclability for multiple reuses, the CZF-biochar composite has potential for the removal of BPA, SMX, and potentially other emerging organic contaminants from contaminated soil and water.
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